Meghan McCain described the outing as amazing and posted a photo on her Twitter account. The 80-year-old senator has been diagnosed with brain cancer.

The lawmaker's office previously sent a statement that said he underwent a procedure on July 14 to remove a blood clot from above his left eye at Mayo Clinic Hospital in Phoenix and would be recovering at home with his family in Arizona.

McCain, who has represented Arizona in the Senate for three decades, was the Republican Party's presidential nominee in 2008. A Navy pilot, he was shot down over Vietnam and held as a prisoner of war for 5 ½ years.